My tool kit was missing some items. I had already replaced the spark plug wrench. I was missing a small red Heyco screwdriver, which I was able to source from a mye28.com member. Ivo was also selling reproduction blue polishing cloths, which I was able to purchase on eBay.

I purchased the tool to perform a compression test. The procedure is pretty simple, especially with the 12v trigger attached to pins 11 and 14. I removed the main relay, fuel pump relay and lead to the ignition coil. I cranked the engine until the compression was stable.